import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import User from './components/user/User.vue'
import Rights from './components/power/Rights.vue'
import Role from './components/role/Role.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import Goods from './components/goods/List.vue'
import Add from './components/goods/Add.vue'
import Order from './components/order/Order.vue'
import Report from './components/report/Report.vue'

Vue.use(Router)

const router = new Router({
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    { path: '/home', 
    component: Home,
    redirect:'/welcome',
    children:[
      {path:'/welcome',component: Welcome},
      {path:'/users',component: User},
      {path:'/rights',component: Rights},
      {path:'/roles',component: Role},
      {path:'/categories',component: Cate },
      {path:'/params',component:Params },
      {path:'/goods',component:Goods },
      {path:'/goods/add',component:Add},
      {path:'/orders',component:Order},
      {path:'/reports',component:Report}
    ] }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //     next()  放行    next('/login')  强制跳转

  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
     next()
})

export default router
